How many hectopascal in 1 inch Hg? The answer is 33.863886666667. We assume you are converting between hectopascal and inch of mercury [0 °C]. You can view more details on each measurement unit: hectopascal or inch Hg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.01 hectopascal, or 0.00029529983071445 inch Hg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between hectopascals and inches of mercury. Type in your own numbers in the form to convert the units!
1 hectopascal to inch Hg = 0.02953 inch Hg
10 hectopascal to inch Hg = 0.2953 inch Hg
20 hectopascal to inch Hg = 0.5906 inch Hg
30 hectopascal to inch Hg = 0.8859 inch Hg
40 hectopascal to inch Hg = 1.1812 inch Hg
50 hectopascal to inch Hg = 1.4765 inch Hg
100 hectopascal to inch Hg = 2.953 inch Hg
200 hectopascal to inch Hg = 5.906 inch Hg
You can do the reverse unit conversion from inch Hg to hectopascal, or enter any two units below:
The SI prefix "hecto" represents a factor of 102, or in exponential notation, 1E2.
So 1 hectopascal = 102 pascals.
The definition of a pascal is as follows:
The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.
Inches of mercury or inHg is a non-SI unit for pressure. It is still widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.
It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.
1 inHg = 3,386.389 pascals at 0 °C.
Aircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. and Canada. The resulting altimeter readings are known as flight levels.
Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced.
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